Pont, Eleuthere Irenee

Erwin Chargaff found that the ratios of adenine to thymine and of guanine to cytosine were always 1 1, suggesting that these bases form pairs. The fact that the ratios are 1 1 is referred to as Chargaff s rules. 

3 end situation in nucleic acids in which the phosphate group is attached at the third carbon atom from where the base is attached 

Rodney F. (2002). Concepts in Biochemistry. New York Wiley. 

Devlin, Thomas M., ed. (2002). Textbook of Biochemistry With Clinical Correlations, 5th edition. New York Wiley-Liss. 

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